7973680465 has 4 divisors (see below), whose sum is σ = 9568416564. Its totient is φ = 6378944368.

The previous prime is 7973680441. The next prime is 7973680487. The reversal of 7973680465 is 5640863797.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1361388609 + 6612291856 = 36897^2 + 81316^2 .

It is a cyclic number.

It is not a de Polignac number, because 7973680465 - 2⁵ = 7973680433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797368042 + ... + 797368051.

It is an arithmetic number, because the mean of its divisors is an integer number (2392104141).

Almost surely, 2^7973680465 is an apocalyptic number.

It is an amenable number.

7973680465 is a deficient number, since it is larger than the sum of its proper divisors (1594736099).

7973680465 is a wasteful number, since it uses less digits than its factorization.

7973680465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594736098.

The product of its (nonzero) digits is 7620480, while the sum is 55.

The square root of 7973680465 is about 89295.4672141873. The cubic root of 7973680465 is about 1997.8042957402.

The spelling of 7973680465 in words is "seven billion, nine hundred seventy-three million, six hundred eighty thousand, four hundred sixty-five".